TQUAD.C

/* 
 * (c) Copyright 1993, Silicon Graphics, Inc. 
 *               1993-1995 Microsoft Corporation 
 * 
 * ALL RIGHTS RESERVED 
 * 
 * Please refer to OpenGL/readme.txt for additional information 
 * 
 */ 
 
#include "glos.h" 
 
#include <stdio.h> 
#include <string.h> 
#include <stdlib.h> 
#include <gl\glaux.h> 
 
 
#define PI 3.141592654 
#define BLACK 0 
#define GRAY 128 
#define WHITE 255 
#define RD 0xA40000FF 
#define WT 0xFFFFFFFF 
#define brickImageWidth 16 
#define brickImageHeight 16 
 
static void CALLBACK ErrorHandler(GLenum which); 
static void Init(void ); 
static void CALLBACK Reshape(int width,int height); 
static void CALLBACK Key_LEFT(void ); 
static void CALLBACK Key_RIGHT(void ); 
static void CALLBACK Key_UP(void ); 
static void CALLBACK Key_DOWN(void ); 
static void CALLBACK Key_X(void ); 
static void CALLBACK Key_x(void ); 
static void CALLBACK Key_1(void ); 
static void CALLBACK Key_2(void ); 
static void CALLBACK Key_3(void ); 
static void CALLBACK Key_4(void ); 
static void CALLBACK Key_0(void ); 
static void CALLBACK Key_A(void ); 
static void CALLBACK Key_a(void ); 
static void CALLBACK Key_S(void ); 
static void CALLBACK Key_s(void ); 
static void CALLBACK Key_d(void ); 
static void CALLBACK Key_f(void ); 
static void CALLBACK Key_G(void ); 
static void CALLBACK Key_g(void ); 
static void CALLBACK Key_J(void ); 
static void CALLBACK Key_j(void ); 
static void CALLBACK Key_H(void ); 
static void CALLBACK Key_h(void ); 
static void CALLBACK Key_K(void ); 
static void CALLBACK Key_k(void ); 
static void CALLBACK Key_L(void ); 
static void CALLBACK Key_l(void ); 
static void CALLBACK Key_z(void ); 
static void CALLBACK Key_q(void ); 
static void CALLBACK Key_w(void ); 
static void CALLBACK Key_e(void ); 
static void CALLBACK Key_r(void ); 
static void CALLBACK Key_t(void ); 
static void CALLBACK Key_y(void ); 
static void CALLBACK Draw(void ); 
static GLenum Args(int argc,char **argv ); 
 
GLenum rgb, doubleBuffer; 
 
float black[3] = { 
    0.0, 0.0, 0.0 
}; 
float blue[3] =  { 
    0.0, 0.0, 1.0 
}; 
float gray[3] =  { 
    0.5, 0.5, 0.5 
}; 
float white[3] = { 
    1.0, 1.0, 1.0 
}; 
 
GLenum doDither = GL_TRUE; 
GLenum shade = GL_TRUE; 
GLenum texture = GL_TRUE; 
 
float xRotation = 30.0, yRotation = 30.0, zRotation = 0.0; 
GLint radius1, radius2; 
GLdouble angle1, angle2; 
GLint slices, stacks; 
GLint height; 
GLint orientation = GLU_OUTSIDE; 
GLint whichQuadric; 
GLUquadricObj *quadObj; 
 
GLuint brickImage[brickImageWidth*brickImageHeight] = { 
    RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, 
    RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, 
    RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, 
    RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, 
    WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, 
    RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, 
    RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, 
    RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, 
    RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, 
    WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, 
    RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, 
    RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, 
    RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, 
    RD, RD, RD, RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, 
    WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, WT, 
    RD, RD, RD, RD, WT, RD, RD, RD, RD, RD, RD, RD, RD, RD, WT, RD 
}; 
char *texFileName = 0; 
 
 
static void CALLBACK ErrorHandler(GLenum which) 
{ 
 
    fprintf(stderr, "Quad Error: %s\n", gluErrorString(which)); 
} 
 
static void Init(void) 
{ 
    static GLint colorIndexes[3] = {0, 200, 255}; 
    static float ambient[] = {0.1, 0.1, 0.1, 1.0}; 
    static float diffuse[] = {0.5, 1.0, 1.0, 1.0}; 
    static float position[] = {90.0, 90.0, 150.0, 0.0}; 
    static float front_mat_shininess[] = {30.0}; 
    static float front_mat_specular[] = {0.2, 0.2, 0.2, 1.0}; 
    static float front_mat_diffuse[] = {0.5, 0.28, 0.38, 1.0}; 
    static float back_mat_shininess[] = {50.0}; 
    static float back_mat_specular[] = {0.5, 0.5, 0.2, 1.0}; 
    static float back_mat_diffuse[] = {1.0, 1.0, 0.2, 1.0}; 
    static float lmodel_ambient[] = {1.0, 1.0, 1.0, 1.0}; 
    static float lmodel_twoside[] = {GL_TRUE}; 
    static float decal[] = {GL_DECAL}; 
    static float modulate[] = {GL_MODULATE}; 
    static float repeat[] = {GL_REPEAT}; 
    static float nearest[] = {GL_NEAREST}; 
    AUX_RGBImageRec *image; 
 
    if (!rgb) { 
    auxSetGreyRamp(); 
    } 
    glClearColor(0.0, 0.0, 0.0, 0.0); 
     
    glDepthFunc(GL_LEQUAL); 
    glEnable(GL_DEPTH_TEST); 
 
    glLightfv(GL_LIGHT0, GL_AMBIENT, ambient); 
    glLightfv(GL_LIGHT0, GL_DIFFUSE, diffuse); 
    glLightfv(GL_LIGHT0, GL_POSITION, position); 
    glLightModelfv(GL_LIGHT_MODEL_AMBIENT, lmodel_ambient); 
    glLightModelfv(GL_LIGHT_MODEL_TWO_SIDE, lmodel_twoside); 
    glEnable(GL_LIGHTING); 
    glEnable(GL_LIGHT0); 
 
    glMaterialfv(GL_FRONT, GL_SHININESS, front_mat_shininess); 
    glMaterialfv(GL_FRONT, GL_SPECULAR, front_mat_specular); 
    glMaterialfv(GL_FRONT, GL_DIFFUSE, front_mat_diffuse); 
    glMaterialfv(GL_BACK, GL_SHININESS, back_mat_shininess); 
    glMaterialfv(GL_BACK, GL_SPECULAR, back_mat_specular); 
    glMaterialfv(GL_BACK, GL_DIFFUSE, back_mat_diffuse); 
    if (!rgb) { 
    glMaterialiv( GL_FRONT_AND_BACK, GL_COLOR_INDEXES, colorIndexes); 
    } 
 
    glTexEnvfv(GL_TEXTURE_ENV, GL_TEXTURE_ENV_MODE, decal); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_S, repeat); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_WRAP_T, repeat); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MAG_FILTER, nearest); 
    glTexParameterfv(GL_TEXTURE_2D, GL_TEXTURE_MIN_FILTER, nearest); 
    if (texFileName) { 
    image = auxRGBImageLoad(texFileName); 
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1); 
    gluBuild2DMipmaps(GL_TEXTURE_2D, 3, image->sizeX, image->sizeY, 
              GL_RGB, GL_UNSIGNED_BYTE, image->data); 
    } else { 
    glPixelStorei(GL_UNPACK_ALIGNMENT, 1); 
    glTexImage2D(GL_TEXTURE_2D, 0, 4, brickImageWidth, brickImageHeight, 
             0, GL_RGBA, GL_UNSIGNED_BYTE, (GLvoid *)brickImage); 
    } 
 
    quadObj = gluNewQuadric(); 
    //gluQuadricCallback(quadObj, GLU_ERROR, ErrorHandler); 
 
    radius1 = 10; 
    radius2 = 5; 
    angle1 = 90; 
    angle2 = 180; 
    slices = 16; 
    stacks = 10; 
    height = 20; 
} 
 
static void CALLBACK Reshape(int width, int height) 
{ 
 
    glViewport(0, 0, (GLint)width, (GLint)height); 
 
    glMatrixMode(GL_PROJECTION); 
    glLoadIdentity(); 
    glFrustum(-1, 1, -1, 1, 1, 10); 
    gluLookAt(2, 2, 2, 0, 0, 0, 0, 0, 1); 
    glMatrixMode(GL_MODELVIEW); 
} 
 
static void CALLBACK Key_LEFT(void) 
{ 
    yRotation += 5; 
} 
 
static void CALLBACK Key_RIGHT(void) 
{ 
    yRotation -= 5; 
} 
 
static void CALLBACK Key_UP(void) 
{ 
    xRotation += 5; 
} 
 
static void CALLBACK Key_DOWN(void) 
{ 
    xRotation -= 5; 
} 
 
static void CALLBACK Key_X(void) 
{ 
    zRotation += 5; 
} 
 
static void CALLBACK Key_x(void) 
{ 
    zRotation -= 5; 
} 
 
static void CALLBACK Key_1(void) 
{ 
    gluQuadricDrawStyle(quadObj, GLU_FILL); 
} 
 
static void CALLBACK Key_2(void) 
{ 
    gluQuadricDrawStyle(quadObj, GLU_POINT); 
} 
 
static void CALLBACK Key_3(void) 
{ 
    gluQuadricDrawStyle(quadObj, GLU_LINE); 
} 
 
static void CALLBACK Key_4(void) 
{ 
    gluQuadricDrawStyle(quadObj, GLU_SILHOUETTE); 
} 
 
static void CALLBACK Key_0(void) 
{ 
    shade = !shade; 
    if (shade) { 
        glShadeModel(GL_SMOOTH); 
        gluQuadricNormals(quadObj, GLU_SMOOTH); 
    } else { 
        glShadeModel(GL_FLAT); 
        gluQuadricNormals(quadObj, GLU_FLAT); 
    } 
} 
 
static void CALLBACK Key_A(void) 
{ 
    stacks++; 
} 
 
static void CALLBACK Key_a(void) 
{ 
    if (stacks > 1) 
        stacks--; 
} 
 
static void CALLBACK Key_S(void) 
{ 
    slices++; 
} 
 
static void CALLBACK Key_s(void) 
{ 
    if (slices > 3) 
        slices--; 
} 
 
static void CALLBACK Key_d(void) 
{ 
    switch(orientation) { 
      case GLU_OUTSIDE: 
        orientation = GLU_INSIDE; 
        break; 
      case GLU_INSIDE: 
      default: 
        orientation = GLU_OUTSIDE; 
        break; 
    } 
    gluQuadricOrientation(quadObj, orientation); 
} 
 
static void CALLBACK Key_f(void) 
{ 
    whichQuadric = (whichQuadric + 1) & 0x03; 
} 
 
static void CALLBACK Key_G(void) 
{ 
    radius1 += 1; 
} 
 
static void CALLBACK Key_g(void) 
{ 
    if (radius1 > 0) 
        radius1 -= 1; 
} 
 
static void CALLBACK Key_J(void) 
{ 
    radius2 += 1; 
} 
 
static void CALLBACK Key_j(void) 
{ 
    if (radius2 > 0) 
        radius2 -= 1; 
} 
 
static void CALLBACK Key_H(void) 
{ 
    height += 2; 
} 
 
static void CALLBACK Key_h(void) 
{ 
    if (height > 0) 
        height -= 2; 
} 
 
static void CALLBACK Key_K(void) 
{ 
    angle1 += 5; 
} 
 
static void CALLBACK Key_k(void) 
{ 
    angle1 -= 5; 
} 
 
static void CALLBACK Key_L(void) 
{ 
    angle2 += 5; 
} 
 
static void CALLBACK Key_l(void) 
{ 
    angle2 -= 5; 
} 
 
static void CALLBACK Key_z(void) 
{ 
        texture = !texture; 
    if (texture) { 
        gluQuadricTexture(quadObj, GL_TRUE); 
        glEnable(GL_TEXTURE_2D); 
    } else { 
        gluQuadricTexture(quadObj, GL_FALSE); 
        glDisable(GL_TEXTURE_2D); 
    } 
} 
 
static void CALLBACK Key_q(void) 
{ 
    glDisable(GL_CULL_FACE); 
} 
 
static void CALLBACK Key_w(void) 
{ 
    glEnable(GL_CULL_FACE); 
    glCullFace(GL_FRONT); 
} 
 
static void CALLBACK Key_e(void) 
{ 
    glEnable(GL_CULL_FACE); 
    glCullFace(GL_BACK); 
} 
 
static void CALLBACK Key_r(void) 
{ 
    glFrontFace(GL_CW); 
} 
 
static void CALLBACK Key_t(void) 
{ 
    glFrontFace(GL_CCW); 
} 
 
static void CALLBACK Key_y(void) 
{ 
    doDither = !doDither; 
    (doDither) ? glEnable(GL_DITHER) : glDisable(GL_DITHER); 
} 
 
static void CALLBACK Draw(void) 
{ 
 
    glLoadIdentity(); 
    glRotatef(xRotation, 1, 0, 0); 
    glRotatef(yRotation, 0, 1, 0); 
    glRotatef(zRotation, 0, 0, 1); 
 
    glClear(GL_COLOR_BUFFER_BIT|GL_DEPTH_BUFFER_BIT); 
 
    glColor3f(1.0, 1.0, 1.0); 
    switch (whichQuadric) { 
      case 0: 
    glTranslatef(0, 0, -height/20.0); 
    gluCylinder(quadObj, radius1/10.0, radius2/10.0, height/10.0,  
            slices, stacks); 
    break; 
      case 1: 
    gluSphere(quadObj, radius1/10.0, slices, stacks); 
    break; 
      case 2: 
    gluPartialDisk(quadObj, radius2/10.0, radius1/10.0, slices,  
               stacks, angle1, angle2); 
    break; 
      case 3: 
    gluDisk(quadObj, radius2/10.0, radius1/10.0, slices, stacks); 
    break; 
    } 
 
    glFlush(); 
 
    if (doubleBuffer) { 
    auxSwapBuffers(); 
    } 
} 
 
static GLenum Args(int argc, char **argv) 
{ 
    GLint i; 
 
    rgb = GL_TRUE; 
    doubleBuffer = GL_FALSE; 
 
 
    for (i = 1; i < argc; i++) { 
    if (strcmp(argv[i], "-ci") == 0) { 
        rgb = GL_FALSE; 
    } else if (strcmp(argv[i], "-rgb") == 0) { 
        rgb = GL_TRUE; 
    } else if (strcmp(argv[i], "-sb") == 0) { 
        doubleBuffer = GL_FALSE; 
    } else if (strcmp(argv[i], "-db") == 0) { 
        doubleBuffer = GL_TRUE; 
    } else if (strcmp(argv[i], "-f") == 0) { 
        if (i+1 >= argc || argv[i+1][0] == '-') { 
        //printf("-f (No file name).\n"); 
        return GL_FALSE; 
        } else { 
        texFileName = argv[++i]; 
        } 
    } else { 
        //printf("%s (Bad option).\n", argv[i]); 
        return GL_FALSE; 
    } 
    } 
    return GL_TRUE; 
} 
 
void main(int argc, char **argv) 
{ 
    GLenum type; 
 
    if (Args(argc, argv) == GL_FALSE) { 
    auxQuit(); 
    } 
 
    auxInitPosition(0, 0, 300, 300); 
 
    type = AUX_DEPTH16; 
    type |= (rgb) ? AUX_RGB : AUX_INDEX; 
    type |= (doubleBuffer) ? AUX_DOUBLE : AUX_SINGLE; 
 
    auxInitDisplayMode(type); 
 
    if (auxInitWindow("Quad Test") == GL_FALSE) { 
    auxQuit(); 
    } 
 
    Init(); 
 
    auxExposeFunc((AUXEXPOSEPROC)Reshape); 
    auxReshapeFunc((AUXRESHAPEPROC)Reshape); 
    auxKeyFunc(AUX_LEFT, Key_LEFT); 
    auxKeyFunc(AUX_RIGHT, Key_RIGHT); 
    auxKeyFunc(AUX_UP, Key_UP); 
    auxKeyFunc(AUX_DOWN, Key_DOWN); 
    auxKeyFunc(AUX_X, Key_X); 
    auxKeyFunc(AUX_x, Key_x); 
    auxKeyFunc(AUX_1, Key_1); 
    auxKeyFunc(AUX_2, Key_2); 
    auxKeyFunc(AUX_3, Key_3); 
    auxKeyFunc(AUX_4, Key_4); 
    auxKeyFunc(AUX_0, Key_0); 
    auxKeyFunc(AUX_A, Key_A); 
    auxKeyFunc(AUX_a, Key_a); 
    auxKeyFunc(AUX_S, Key_S); 
    auxKeyFunc(AUX_s, Key_s); 
    auxKeyFunc(AUX_d, Key_d); 
    auxKeyFunc(AUX_f, Key_f); 
    auxKeyFunc(AUX_G, Key_G); 
    auxKeyFunc(AUX_g, Key_g); 
    auxKeyFunc(AUX_J, Key_J); 
    auxKeyFunc(AUX_j, Key_j); 
    auxKeyFunc(AUX_H, Key_H); 
    auxKeyFunc(AUX_h, Key_h); 
    auxKeyFunc(AUX_K, Key_K); 
    auxKeyFunc(AUX_k, Key_k); 
    auxKeyFunc(AUX_L, Key_L); 
    auxKeyFunc(AUX_l, Key_l); 
    auxKeyFunc(AUX_z, Key_z); 
    auxKeyFunc(AUX_Q, Key_q); 
    auxKeyFunc(AUX_w, Key_w); 
    auxKeyFunc(AUX_e, Key_e); 
    auxKeyFunc(AUX_r, Key_r); 
    auxKeyFunc(AUX_t, Key_t); 
    auxKeyFunc(AUX_y, Key_y); 
    auxMainLoop(Draw); 
}